Problems from 2021 ICPC North America Regional Programming Contests (March 5 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Archery Accuracy0.018711363526%6.9Harden
Average Character0.0054363178541%1.8Easyen
Black and White0.0759242918242%4.8Mediumen
Circle Bounce0.0020021511051%4.9Mediumen
Diagonals0.0018532046733%7.2Harden
Dorm Room Divide0.03476164821113%6.7Harden
Double Password0.0054185242858%1.6Easyen
Fail Them All!0.0089946911525%8.0Harden
Hopscotch 5000.1187864614022%7.3Harden
Overdraft0.0053019123441%2.1Easyen
Problem Set Construction0.01940804050%6.9Harden
Reversibly Cyclic Strings0.00568530845%3.2Mediumen
Rise and Fall0.0088112226924%4.7Mediumen
Scaling Recipe0.005190487746%1.9Easyen
Shortest Missing Subsequences0.0939437411731%6.1Harden
Square Bounce0.005031645433%6.3Harden
Tetris Generation0.0090122229824%6.0Harden
Tournament Seeding0.0322050722645%4.0Mediumen
Tree Hopping0.0289397428729%6.4Harden
Who Goes There?0.00119125340632%3.9Mediumen
XOR Island0.0029130310434%7.2Harden